Users Guide
pfc-cos
Congures the matching dot1p values used to send PFC pause frames.
Syntax
pfc-cos dot1p-priority
Parameters dot1p-priority — Enter a single dot1p priority value for a PFC trac class (1 to 7), a hyphen-separated
range, or multiple dot1p values separated by commas.
Default Not congured
Command Mode POLICY-CLASS NETWORK-QOS
Usage Information When you enter PFC-enabled dot1p priorities with pfc-cos, the dot1p values must be the same as the match
qos-group (trac class) numbers in the network-qos class map used to dene the PFC trac class (see
Congure PFC Example). A qos-group number is used only internally to classify ingress trac classes. See PFC
conguration notes for the default dot1p-priority-to-trac-class mapping and how to congure a non-default
mapping. A PFC trac class requires a 1-to-1 mapping — only one dot1p value is mapped to a qos-group
number.
Example
OS10(config)# class-map type network-qos cc1
OS10(conf-cmap-nqos)# match qos-group 3
OS10(conf-cmap-nqos)# exit
Example (policy-
map)
OS10(config)# policy-map type network-qos pp1
OS10(conf-pmap-network-qos)# class cc1
OS10(conf-pmap-c-nqos)# pfc-cos 3
Supported Releases 10.3.0E or later
pfc-shared-buer-size
Congures the amount of shared buers available for PFC-enabled trac on the switch.
Syntax
pfc-shared-buffer-size kilobytes
Parameter kilobytes — Enter the total amount of shared buers available to PFC-enabled dot1p trac in kilobytes (0 to
7787).
Default 832KB
Command Mode SYSTEM-QOS
Usage Information By default, all ingress trac is handled by the lossy ingress buer. When you enable PFC, dot1p ingress trac
competes for shared buers in the lossless pool instead of the shared lossy pool. Use this command to increase or
decrease the shared buer allowed for PFC-enabled ows. The congured amount of shared buers is reserved
for PFC ows only after you enable PFC on an interface (priority-flow-control mode on command).
Example
OS10(config)# system qos
OS10(conf-sys-qos)# pause-shared-buffer-size 1024
Supported Releases 10.3.0E or later
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